TheRadioBoard

Norm,

Interesting schematic!

I followed out to more info, as I was
sort of puzzled as to what the idea was, here.

If you go the right-hand-bottom ot the article,
it will take you to the entire project. . .It's kind of
a hoot:

http://www.make-digital.com/make/vol09/?pg=107

Here's something else that I found. . .

http://cdn.oreilly.com/make/09/cracker_box_amp.pdf

Mike

_________________
I like the K-I-S-S Principle: "Keep It Sane & Simple"
http://www.peeblesoriginals.com

Mike,

I'm glad you like that circuit! I did find those other links and it is funny how they mounted it all in an actual Ritz box! I like the minimum parts count and the fact that it has a pot to control the gain of the 386 chip. I can see how this variable gain idea can be used to make a little utility amp for various uses. I have a LM386 kicking around and think this may be an idea worth pursuing.

Norman
KA1GUK